Means for the production of printing-slugs.



P. I. DODGE.

nuszcnox or IIIIIIIIIIIIII ED SEPT. 30, 1912. 1,084,617, Patented Jan.20, 1914.

I HILIPTELL DODGE, OF NEW YORK, N. Y., ASSIGNOR T0 MERGEN'IHALERLINOTYPE COMPANY, A CORPORATION OF NEW YORK.

MEANS R THE PRODUCTION OF PBINTING-SLUGS.

esa- 7.

Patented J an. 2t 1914. Divided and this app ication filed September 30,1912. Serial No. 723,050.

. citizen of the United States. 1 :siding at New York, in the county ofNew York and State of New York, have invented certain new and usefulImprovements in Means for the Production of Printing-Slugs, of which thefollowing is a specification, reference being had therein to theaccompanying drawing,'being a division of original application filedJuly 15, 1907, Serial No. 383,831.

For various special purposes, such as the printing of addresses onnewspapers, it is desirable to have white characters appear on a blackbackground.

The object of my invention is to secure the production of forms for thispurpose in composing machines, such for example as the Mergenthalerlinotype. To this end I provide dies having a mercantile form similar tothose of the linotype, but having instead of the intaglio characters,cameo char acters so formed and arranged as to enter the face of themold and form intagliopharacters therein. These dies may beused in alinotype machine of ordinary onstruction, and composed in lines, thejustified lines presented to the mold, and thereafter distributed in thesame manner that the ordinary matrices are distributed in such machines,as illustrated for example in Letters Patent of the United States No.436,532. A series of slugs formed on my plan and assembled side by side,as they will be in the machine, will present a solid flat printingsurface with intaglio characters therein. The

ters therein. f Referring to the drawings: Figure l is a perspectiveview showing a series of slugs producedin accordance w1th my invention.Fig. 52- is a perspective view of one of the dies used in the machinefor producing these slugs. Fig. 3 is a cross-section of the mold withone of the dies of the line presented thereto, showing the manner inwhich the character on the die enters the face of the mold so as to becovered and surrounded by the type metal. I

The dies B consist each of a flat metallic plate' having on one edge inrelief a character or die 5. The dies B are preferably made of the samemarginal form as the ordinary matrices used in linotype machines. andare provided with distributing teeth 7/ in the upper end, and otherwiseadapted to be used in the Linotypemachine in preciselv the same mannerthat the ordinarv matrices are used. The mold C, with which the diescooperate, is provided with a slot or mold proper c-of the exactdimensions of the required slugs. This mold may be used and arranged inthe machine in the same manner that the ordinary mold is used, toreceive molten type metal to form slugs therein. The dies have theircharacters (3 made'of such size and so located as to project into thefront of the mold slot. The line of dies B, assembled side by side andpresented tightly against the face of the mold, completely closes thesame and prevents the escape of molten metal. T he metal, on enteringthe mold, will flow over and around the characters Z) and against theface of the matrices, and the resultant slugs A have the appearanceshown in Fig. 1, with fiat upper edges and the series of characterstherein. These slugs are made of uniform height. preferably typchigh.and of any required length or measure. They are adapted to fit tightlytogether side by side, and each slug contains in its upper or printingedge the intaglio characters a in the order and arrangement in whichthey are to appear in print. The slugs are so formed that when assembledside by side, their upper edges will present a continuous unbrokensurface adapted to print on the surface of the form. upon being inked,and paper a black background without lin r pressed upon the paper, willproduce there on a solid black background with white let breaks betweenthe lines of characters.

Vlnlein the accompanying drawmgs and foregomgdescription-I have setforth my invention in the form I prefer to adopt, it :will be understoodthat the same may be modified or changed within the skill of themechanic without departing from the limits o,f-.the invention; and itwill be further understood that the invention is not limited to anyparticular form or construction of the parts except in so far as "suchlimitations are specified in the claimsf g.

It will be observcdthat the printing slug with the intaglio characterstherein is;

formed in the mold directly by the injection of the molten metal againstand aroundthe cameo characters on the dies and against passes the-planesurfaces imm diately surrounding the characters, these planessurfacesbeing specially and designedly formed so that they will give to the castslug, corresponding and uniform plane surfaces of a character suitableto take the ink and transfer it to the paper, and in this way produce ablack back-around. In order, by the operations described to produceprinting slugs which may be employed for printing directly therefrom ablack background around white characters, the intaglio characterstherein must read from right to left, and the dies assembled before themold must consequently read from left to right, otherwise the printingbar cast directly from the dies would print characters on the paperreading the wrong .way; -Moreover, by reason of the fact that the planesurface of each matrix is uniform and smooth,'it presents animpressionproducing surface which not only encomthe intaglio characterbut one which is coextensive (or practically so) with the dimensions ofthe mold slot which it closes. As a result, the printing surface of theslug produced by a series of matrices thus formed will be coextensivewith the dimensions of the mold slot, or practically so. By theexpressien. encompassing in describing the extent ofthe-impression-producing surface is not necessarily meant a surfacewhich entirely surrounds the intaglio character, for in certain casesthe character may extend up to one or more of the edges of theimpression-producing surface, without departing from the limits of theinvention.

Having described my invention, what I claim and desire to secure byLetters Patent 1. In a mechanism for producing printlug slugs adapted toproduce a black back are .L

IliulOn of aslotted-mold and a series of dies adapted'to close themoldand each provided with a cameo character extending into the mold andarranged'to read fromjleft. to right and havingan impression producingsurface encompassing said cameocharacter and substantially coextensivewith the dimensions of the die-closing portions of the mold slot;whereby printing elements formed.

by the injection of metal into the mold will have flat printing surfaceswhich encompass intaglio characters reading from right to left.

2. In combination with a slotted mold, dies provided with cameocharacters and with encompassing plane impressionproducing surfaces,said dies adapted tobe as:

sembled in a line and presented to the mold,

with the characters projecting into the mold slot and reading from leftto right and with the plane surfaces closing the front of the mold slotto effect animpression-produeing surface practically coextensii'ewith-the dimensions of the mold slot; whereby by the' supply of moltenmetal to. themold, a printing slug willbe produced therein directly fromthe dies, which'slug will have int-aglio characters reading from rightto left and encompassed by printing surfaces to pro;

duce a black background around white characters. y In testimonywhereof-I afiix my signature in presence of two witnesses.

PHILIP TELL DODGE.-

and around white characters, the combi-y

